Encyclopedia Entry: 74ALVC245D,112

Product Overview

Category

The 74ALVC245D,112 belongs to the category of integrated circuits (ICs) and specifically falls under the family of bus transceivers.

Use

This product is commonly used for bidirectional level shifting and voltage translation between different logic levels in digital systems. It enables seamless communication between devices operating at different voltage levels.

Characteristics

• Bidirectional data transfer capability
• Wide operating voltage range
• High-speed operation
• Low power consumption
• ESD protection on all inputs and outputs

Package

The 74ALVC245D,112 is available in a standard 20-pin TSSOP (Thin Shrink Small Outline Package) package. This package offers compactness and ease of integration into various electronic designs.

Essence

The essence of the 74ALVC245D,112 lies in its ability to provide efficient and reliable bidirectional voltage translation, ensuring seamless data transfer between devices operating at different logic levels.

Packaging/Quantity

The product is typically supplied in reels or tubes, with each reel containing a specific quantity of ICs. The exact packaging and quantity may vary depending on the manufacturer and supplier.

Specifications

• Supply Voltage Range: 1.2V to 3.6V
• Logic Family: ALVC
• Number of Channels: 8
• Input/Output Compatibility: TTL, CMOS
• Maximum Data Rate: 400 Mbps
• Operating Temperature Range: -40°C to +85°C

Detailed Pin Configuration

The 74ALVC245D,112 features a total of 20 pins, each serving a specific purpose. Here is the detailed pin configuration:

1. DIR (Direction Control)
2. OE (Output Enable)
3. A1 (Data Input/Output)
4. B1 (Data Input/Output)
5. A2 (Data Input/Output)
6. B2 (Data Input/Output)
7. A3 (Data Input/Output)
8. B3 (Data Input/Output)
9. GND (Ground)
10. B4 (Data Input/Output)
11. A4 (Data Input/Output)
12. B5 (Data Input/Output)
13. A5 (Data Input/Output)
14. B6 (Data Input/Output)
15. A6 (Data Input/Output)
16. B7 (Data Input/Output)
17. A7 (Data Input/Output)
18. VCC (Power Supply)
19. B8 (Data Input/Output)
20. A8 (Data Input/Output)

Functional Features

• Bidirectional data transfer: Allows data to be transmitted in both directions, facilitating communication between devices.
• Voltage level translation: Enables seamless data transfer between devices operating at different logic voltage levels.
• Output enable control: Provides the ability to disable the outputs when not required, reducing power consumption and preventing bus contention.

Advantages and Disadvantages

Advantages

• Wide operating voltage range allows compatibility with various systems.
• High-speed operation enables efficient data transfer.
• Low power consumption contributes to energy-efficient designs.
• ESD protection on all inputs and outputs enhances reliability.

Disadvantages

• Limited number of channels may restrict its use in applications requiring a higher number of data lines.
• The TSSOP package may pose challenges for manual soldering due to its small size.

Working Principles

The 74ALVC245D,112 operates based on the principles of voltage level shifting and bidirectional data transfer. It utilizes internal circuitry to detect and translate logic signals from one voltage level to another, ensuring compatibility between different devices. The direction control pin (DIR) determines the direction of data flow, while the output enable pin (OE) allows for enabling or disabling the outputs as needed.

Detailed Application Field Plans

The 74ALVC245D,112 finds applications in various fields where voltage translation and bidirectional data transfer are required. Some specific application areas include:

1. Microcontroller interfacing: It enables communication between microcontrollers operating at different voltage levels.
2. Memory modules: Facilitates data transfer between memory modules with varying logic voltage levels.
3. Communication systems: Allows seamless integration of devices operating at different voltage standards, such as UART, SPI, or I2C interfaces.
4. Industrial automation: Enables compatibility between different control systems and sensors operating at different voltage levels.

Detailed and Complete Alternative Models

• SN74LVC245A: Similar bidirectional bus transceiver with 8 channels and a wide operating voltage range.
• MC74LVX245: Another bus transceiver offering bidirectional voltage translation and compatibility with TTL and CMOS logic families.
• CD74HCT245: High-speed octal bus transceiver with TTL-compatible inputs and outputs.

These alternative models provide similar functionality to the